Meteorologists say it's too early to attribute the extreme heat to climate change, but do say the driving force is a warm air mass from Africa's west coast moving across Europe.

气象学家表示，现在将这些极端高温归因于气候变化还为时过早，但他们确实表示，这和来自非洲西海岸，途径欧洲的暖湿气团有很大关系。

In other words, the motion  of a charged particle through a constant electric field will have similar characteristics to a  mass moving through a constant gravitational field near the surface of a planet.

换句话说，带电粒子穿过恒定电场的运动将具有与质量穿过行星表面附近的恒定重力场的运动相似的特性。